公开(公告)号：US20240183740A1

公开(公告)日：2024-06-06

申请号：US18283689

申请日：2022-03-14

申请人： ATEQ

发明人： Thierry May

IPC分类号： G01M3/20

CPC分类号： G01M3/205

摘要： The present invention relates to a mass spectrometer (10) for detecting leakages via a tracer gas, said spectrometer (10) comprising:—an ionising means (3) intended to ionise said tracer gas;—at least one magnetic-field source (501) that generates a magnetic field (I) that is dependent on the electric current I supplied to said source (501) and that is intended to sort ionised elements;—a means (7) for detecting said tracer gas once ionised; characterized in that said spectrometer comprises a means (II) for adjusting the magnetic field, said adjusting means being configured to allow at least two separate adjustments, said adjustments having different sensitivities.

公开(公告)号：US20240159616A1

公开(公告)日：2024-05-16

申请号：US18280703

申请日：2022-02-03

申请人： INFICON GMBH

发明人： Heike HILGERS

IPC分类号： G01M3/20 ,  H01M10/42

CPC分类号： G01M3/205 ,  H01M10/4228

摘要： A test leak device for functional testing of a leak detection device for the leak test of a test specimen (14) filled with a liquid (12) having an internal pressure that is lower than atmospheric pressure, comprising



a reservoir (102) filled with a test liquid (104), wherein the test liquid (104) has a vapor pressure of less than 500 mbar at room temperature, and the reservoir (102) comprises an outlet (106), and
a pump (100) cooperating with the reservoir (102) and configured to convey the test liquid (104) from the reservoir (102) in such a way that the test liquid (104) escapes from the pump (100) through the outlet (106) in liquid form from the reservoir (102).

公开(公告)号：US11846566B2

公开(公告)日：2023-12-19

申请号：US17424959

申请日：2020-01-28

申请人： SARTORIUS STEDIM FMT SAS

发明人： Laurent Thenard ,  Marc Hogreve ,  Tomasz Urbaniak ,  Mandip Nachhattar ,  Delphine Philippeau ,  Bastien Cattaux

IPC分类号： G01M3/20 ,  G01M3/32

CPC分类号： G01M3/202 ,  G01M3/3281

摘要： Integrity of a flexible bag is verified by a testing system, using helium to detect existence of a possible hole. The flexible bag is preliminary placed in vacuum chamber of a fluid-tightly isolated enclosure. After connecting a port of the bag to a helium feeding pipe, vacuum suction is performed to obtain vacuum outside the bag in the enclosure. Then, a first amount of helium is diffused in the internal volume of the enclosure through a gas permeable wall, to increase helium partial pressure outside the flexible bag. After, in a test phase while said vacuum suction is still performed, the bag is filled with a second amount of helium. A detector detects information representative of helium partial pressure in the internal volume, to allow detection of helium escaping from the bag, by analysis of a helium partial pressure drop.

公开(公告)号：US20230314267A1

公开(公告)日：2023-10-05

申请号：US18022662

申请日：2020-09-09

申请人： FUKUDA CO., LTD.

发明人： Tomoyuki FUTAMI ,  Takaaki WATANABE ,  Akimitsu TANABE

IPC分类号： G01M3/20

CPC分类号： G01M3/20

摘要： The present invention provides a method for leak testing by which occurrence of fine leakage from a work as a test object can be determined without being affected by a released tracer gas that is also released from a non-defective work. The method for leak testing includes a series of steps including a gas bombing step wherein a work W as a test object is soaked in a pressurized tracer gas, a work setting step wherein the work subjected to the gas bombing is set in a hermetically sealed container 10, a vacuum suctioning step wherein the hermetically sealed container 10 is vacuum suctioned by a suction device 20 and a measuring step wherein tracer gas measurement data are obtained by measuring a vacuum suctioned tracer gas with a detector 30. Tracer gas measurement data for a non-defective work are preliminarily obtained by performing the series of steps for the non-defective work having same specifications as the work W as the test object. The tracer gas measurement data for the work W as the test object are compared with the tracer gas measurement data for the non-defective work in the measuring step, and thereby, occurrence of fine leakage from the work as the test object is determined.

公开(公告)号：US20230253633A1

公开(公告)日：2023-08-10

申请号：US18015566

申请日：2021-07-13

申请人： Marposs

发明人： Elie Cohen ,  Giuseppe Vollaro

IPC分类号： H01M10/42 ,  G01M3/20

CPC分类号： H01M10/4228 ,  G01M3/205

摘要： Leak testing system (100) and method for leak testing a finished battery cell, comprising a vacuum chamber (4), a vacuum pump (6), a detecting and measuring system (1) to detect gases and/or vapors escaping from the cell, the gases and/or vapors deriving from parts and/or substances inside in the cell, and a capillary element (2) which connects the detecting and measuring system to the vacuum chamber and through which the gases and/or vapors leaking from the cell flow. The system further comprises heating devices adapted to heat at least one of the components of system, thereby making the system substantially memory-free.

公开(公告)号：US20230221204A1

公开(公告)日：2023-07-13

申请号：US18153372

申请日：2023-01-12

申请人： Marunaka Co., Ltd. ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Mitsugu NAKAGAWA ,  Kyojiro INOUE

IPC分类号： G01M3/20

CPC分类号： G01M3/20

摘要： An apparatus for leak test is provided with: a gas dissolution portion having function to degasify a unused liquid; a liquid filling and circulation portion for filling the gas dissolved liquid in the test piece; a high-pressure application portion for pressurizing the filled gas dissolved liquid; a leak test portion for detecting the gas in the liquid vapor leaking out in the vacuum container from leak hole(s) of the test piece resulting from high-pressure application; and a liquid collection portion for collecting the gas dissolved liquid as relieving high pressure. The leak test process under high pressure is conducted in the closed circulated flow path. The leak test process uses the liquid easy for gas to be dissolved and to flow through the leak hole(s). Further, the leak test process uses the gas easy to dissolve in the liquid or to be detected.

公开(公告)号：US11592352B2

公开(公告)日：2023-02-28

申请号：US17340483

申请日：2021-06-07

申请人： Packaging Technologies and Inspection, LLC

发明人： Ross Treloar ,  Andrew O'Sullivan ,  Heinz Wolf

IPC分类号： G01M3/40 ,  G01M3/26 ,  G01M3/04 ,  G01M3/16 ,  G01N27/00 ,  G01N27/60 ,  G01N27/20 ,  G01M3/02 ,  G01M3/12 ,  G01M3/24 ,  G01M3/06 ,  G01M3/20

摘要： A leak detection system includes a testing interface, which includes a rotation holder configured to retain and rotate a package. The testing interface includes a plunger apparatus configured to actuate a plunger to apply a pressure to the package before and/or during the package being inspected using a high voltage leak detection (HVLD) apparatus. The testing interface also includes a controller configured to operate and coordinate the operation of the testing interface with operation of the HVLD apparatus.

公开(公告)号：US11561149B2

公开(公告)日：2023-01-24

申请号：US16193688

申请日：2018-11-16

申请人： Picarro, Inc.

发明人： Chris W. Rella ,  Eric R. Crosson ,  Michael R. Woelk ,  Sze Meng Tan

IPC分类号： G01N21/39 ,  G01M3/20 ,  G01N21/3504 ,  G01N21/01 ,  G01M3/38 ,  G01N21/31 ,  G01N21/03

摘要： Improved gas leak detection from moving platforms is provided. Automatic horizontal spatial scale analysis can be performed in order to distinguish a leak from background levels of the measured gas. Source identification can be provided by using isotopic ratios and/or chemical tracers to distinguish gas leaks from other sources of the measured gas. Multi-point measurements combined with spatial analysis of the multi-point measurement results can provide leak source distance estimates. These methods can be practiced individually or in any combination.

公开(公告)号：US11554455B2

公开(公告)日：2023-01-17

申请号：US17171200

申请日：2021-02-09

申请人： DISCO CORPORATION

发明人： Yoshinobu Saito ,  Yoshikuni Migiyama

IPC分类号： B23Q11/12 ,  B23Q17/00 ,  B23Q17/24 ,  C09K11/08 ,  C09K11/77 ,  G01M3/20 ,  B23Q5/32

摘要： A processing apparatus includes a chuck table having a holding surface for holding a workpiece; a horizontal moving mechanism that moves the chuck table in a horizontal direction and is supplied with a first oil; and a vertical moving mechanism that moves a processing unit in a vertical direction and is supplied with a second oil. Before mounting the workpiece on the holding surface, the holding surface is imaged by a camera while being irradiated with light, and it is examined whether or not the picked-up image is emitting light. If there is a light-emitting part in the picked-up image, it is determined that oil is adhered to the light-emitting part.

公开(公告)号：US20230003602A1

公开(公告)日：2023-01-05

申请号：US17581849

申请日：2022-01-21

申请人： Uni-Helium Test Technology (Shanghai) Co., LTD.

发明人： WU YING ,  TINGGUANG JIN ,  YE YUAN ,  ZHANGXIANG CHE

IPC分类号： G01M3/22 ,  G01M3/20

摘要： A battery pack leakage detection system and detection method are provided. The system includes a test container, a gas filling subsystem, a gas stirring subsystem and a test analysis subsystem. The method can test the sealing performance of the battery pack under the atmospheric pressure, so that the battery pack can meet the corresponding sealing grade requirements of IP67 and IP68. The method not only solves the problem that the traditional gas detection method cannot meet the test requirements of IP67 and IP68 due to insufficient measurement precision, but also solves the problem that the traditional vacuum helium detection method will damage the battery cells in the battery pack.